docs: def cli(env, account_id):
      """List origin pull mappings."""
  
      manager = SoftLayer.CDNManager(env.client)
      origins = manager.get_origins(account_id)
  
      table = formatting.Table(['id', 'media_type', 'cname', 'origin_url'])
  
      for origin in origins:
          table.add_row([origin['id'],
                         origin['mediaType'],
                         origin.get('cname', formatting.blank()),
                         origin['originUrl']])
  
      env.fout(table)